• Special Screws
  • Washers・Insert


Seal Washer

Dimension Drawing

SWS-FSealing Washers寸法図


Unit : mm

Part Number Nominal d D h t t1 C Qty per Pack Mass
CAD Standard
SWS-4-F 4 4.2 8 0.5 2.1 2 7.2 10 0.2 36.02 CAD Cart


Main Body SUS304
Rubber Packing Fluororubber


Seal ring
Oil hydraulic equipment / Pneumatic device


  • Stainless steel sealing washers with a built-in rubber seal.
  • Washers prevent the leakage of gas and liquid from the bearing surface of the screw head.
  • The rubber does not escape even when the screw is tightened, and the rubber contacts tightly with the thread peak section to form a seal.
  • Fluororubber is used for rubber seal of SWS-F. Excellent chemical resistance, heat resistance, and ozone resistance.
  • Allowable Operating Temperature
    120°C ---- SWS
    200°C ---- SWS-F
    120°C ---- SWS-E
    180°C ---- SWS-S
  • Also, sealing washers with silicone rubber and EPDM rubber seals is available.

Usage Example

SWS-FSealing Washers

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